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ElectricalWhat is free visual search engine for identifying electrical components in schematics. Imagine Wikipedia for electronic symbols. Making projects with electronics got a whole lot easier recently with the Ponoko + Sparkfun partnership, but the technical learning curve can still be intimidating. ElectricalWhat makes one of the more confusing parts of the process, circuit diagrams, just a little bit easier.

To use the search engine, click the tags that describe what you see in the symbol. For example, “triangles: arrow: two terminals” narrows down your search to two types of diodes. It’s a surprisingly simple way to navigate the complex world of electrical symbols.